java struts-config.xml 中的 *.do 是什么
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/12297420/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
what is *.do in struts-config.xml
提问by Susie
I am learing struts and I found a mapping in Struts-config.xml as follow
我正在学习 struts，我在 Struts-config.xml 中找到了一个映射如下
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
in servlet mapping tag.
在 servlet 映射标记中。
what is *.do
什么是 *.do
Can we achive the same in web.xml of servlets ?
我们可以在 servlet 的 web.xml 中实现相同的目标吗？
Thanks in Advance ,
提前致谢 ，
Raj
拉吉
回答by Renjith K N
*.do- It just means that any URL that ends with a ".do"
Yes we can achive the same in web.xml of servlets
ie: any url requests that ends with .dowill be redirected to the specified Servlet , In our case to the servlet named action
*.do- 这只是意味着任何以“.do”结尾的 URL
是的，我们可以在 servlet 的 web.xml 中实现相同的目标，
即：任何.do以action
This Linkgive you a good idea about web.xmland struts-config.xmland differencebetween them
这个链接让你对web.xml和struts-config.xml以及它们之间的区别有一个很好的了解
回答by Susie
As far as I know .do url invokes your servlet. I have seen this extension being used with Struts.
据我所知 .do url 调用您的 servlet。我已经看到这个扩展与 Struts 一起使用。
So if you have www.hey.com/hello.do Then you struts configuration will have something as follows
所以如果你有 www.hey.com/hello.do 那么你的struts配置会有如下内容
<struts-config>
<action-mappings>
<action path="/hello" type="com.MyAction">
</action-mappings>
</struts-config>
So in this example the url"www.hey.com/hello.do" will be forwarded to MyAction.java
所以在这个例子中 url"www.hey.com/hello.do" 将被转发到 MyAction.java
In your particular example, you found that occurrence of *.do in your web.xml file. What that means is all request that ends with *.do will be forwarded to "action" servlet.
在您的特定示例中，您发现在 web.xml 文件中出现了 *.do。这意味着所有以 *.do 结尾的请求都将被转发到“action”servlet。
回答by Dipul Patel
Every url which ends with *.do it calls your servlet.
每个以 *.do 结尾的 url 都会调用你的 servlet。
